Physical Therapy Assistant Practice Exam 2026 - Free PTA Practice Questions and Study Guide

Elevated platelet levels, also known as thrombocytosis, are significant primarily because they indicate an increased risk of thrombosis, or abnormal blood clotting. When platelets are elevated, there is a higher likelihood that they will cluster together, leading to the formation of clots that can obstruct blood vessels. This condition can result in serious complications, such as heart attacks and strokes, because the clots may reduce or block blood flow to vital organs.

On the other hand, while bruising can be linked to platelet function, increased levels usually do not lead to an increased risk of bruising; rather, low platelet counts are typically associated with bruising. Anemia is more related to hemoglobin levels or red blood cell counts, thus not directly connected to elevated platelet counts. Lastly, dehydration can cause changes in blood volume and concentration, but it does not necessarily lead to elevated platelet counts. Therefore, understanding the link between elevated platelets and the risk of thrombosis is crucial in clinical practice.